Goodwill and Other Intangible Assets - Estimated Amortization Expense of Finite-Lived Intangible Assets (Details) $ in Thousands	Sep. 30, 2025 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Weighted average useful life (in years)	9 years
Finite-Lived Intangible Assets [Line Items]
2025	$ 27,103
2026	31,592
2027	28,068
2028	23,820
2029	18,666
Thereafter	44,466
Core Deposit Intangibles
Finite-Lived Intangible Assets [Line Items]
2025	26,055
2026	30,732
2027	27,440
2028	23,337
2029	18,335
Thereafter	44,322
Customer relationship intangible
Finite-Lived Intangible Assets [Line Items]
2025	1,048
2026	860
2027	628
2028	483
2029	331
Thereafter	$ 144